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Diffstat (limited to '')
| -rw-r--r-- | services/std_svc/drtm/drtm_main.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/services/std_svc/drtm/drtm_main.h b/services/std_svc/drtm/drtm_main.h new file mode 100644 index 0000000..6005163 --- /dev/null +++ b/services/std_svc/drtm/drtm_main.h @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2022 Arm Limited. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + * + */ +#ifndef DRTM_MAIN_H +#define DRTM_MAIN_H + +#include <stdint.h> + +#include <assert.h> +#include <lib/smccc.h> + +#include "drtm_dma_prot.h" + +#define ALIGNED_UP(x, a) __extension__ ({ \ + __typeof__(a) _a = (a); \ + __typeof__(a) _one = 1; \ + assert(IS_POWER_OF_TWO(_a)); \ + ((x) + (_a - _one)) & ~(_a - _one); \ +}) + +#define ALIGNED_DOWN(x, a) __extension__ ({ \ + __typeof__(a) _a = (a); \ + __typeof__(a) _one = 1; \ + assert(IS_POWER_OF_TWO(_a)); \ + (x) & ~(_a - _one); \ +}) + +#define DRTM_PAGE_SIZE (4 * (1 << 10)) +#define DRTM_PAGE_SIZE_STR "4-KiB" + +#define DL_ARGS_GET_DMA_PROT_TYPE(a) (((a)->features >> 3) & 0x7U) +#define DL_ARGS_GET_PCR_SCHEMA(a) (((a)->features >> 1) & 0x3U) +#define DL_ARGS_GET_DLME_ENTRY_POINT(a) \ + (((a)->dlme_paddr + (a)->dlme_img_off + (a)->dlme_img_ep_off)) + +/* + * Range(Min/Max) of DRTM parameter structure versions supported + */ +#define ARM_DRTM_PARAMS_MIN_VERSION U(1) +#define ARM_DRTM_PARAMS_MAX_VERSION U(1) + +enum drtm_dlme_el { + DLME_AT_EL1 = MODE_EL1, + DLME_AT_EL2 = MODE_EL2 +}; + +enum drtm_retc { + SUCCESS = SMC_OK, + NOT_SUPPORTED = SMC_UNK, + INVALID_PARAMETERS = -2, + DENIED = -3, + NOT_FOUND = -4, + INTERNAL_ERROR = -5, + MEM_PROTECT_INVALID = -6, +}; + +typedef struct { + uint64_t tpm_features; + uint64_t minimum_memory_requirement; + uint64_t dma_prot_features; + uint64_t boot_pe_id; + uint64_t tcb_hash_features; +} drtm_features_t; + +struct __packed drtm_dl_args_v1 { + uint16_t version; /* Must be 1. */ + uint8_t __res[2]; + uint32_t features; + uint64_t dlme_paddr; + uint64_t dlme_size; + uint64_t dlme_img_off; + uint64_t dlme_img_ep_off; + uint64_t dlme_img_size; + uint64_t dlme_data_off; + uint64_t dce_nwd_paddr; + uint64_t dce_nwd_size; + drtm_dl_dma_prot_args_v1_t dma_prot_args; +} __aligned(__alignof(uint16_t /* First member's type, `uint16_t version' */)); + +struct __packed dlme_data_header_v1 { + uint16_t version; /* Must be 1. */ + uint16_t this_hdr_size; + uint8_t __res[4]; + uint64_t dlme_data_size; + uint64_t dlme_prot_regions_size; + uint64_t dlme_addr_map_size; + uint64_t dlme_tpm_log_size; + uint64_t dlme_tcb_hashes_table_size; + uint64_t dlme_impdef_region_size; +} __aligned(__alignof(uint16_t /* First member's type, `uint16_t version'. */)); + +typedef struct dlme_data_header_v1 struct_dlme_data_header; + +drtm_memory_region_descriptor_table_t *drtm_build_address_map(void); +uint64_t drtm_get_address_map_size(void); + +/* + * Version-independent type. May be used to avoid excessive line of code + * changes when migrating to new struct versions. + */ +typedef struct drtm_dl_args_v1 struct_drtm_dl_args; + +#endif /* DRTM_MAIN_H */ |